Fabrice Couvreur via ntg-context schrieb am 16.08.2021 um 11:24:
> Hi,
> I wish to have the table of contents as the attached image. The result 
> is almost as expected except for the margin of the subsection.
>
>  \setuplist
>    [chapter,section,subsection]
>  [width=fit,distance=\spaceamount]
>
>  \setuplist
>    [chapter]
>  [alternative=b]
>
>  \setuplist [chapter][style=bold]
>
>
>  \setuplist [section]    [margin=1em]
>  \setuplist [subsection] [margin=2.75em]
>

Use fixed values for the width.

\setuplist
   [chapter]
   [width=1em]


\setuplist
   [section]
   [margin=1em,% chapter width
    width=1.75em]

\setuplist
   [subsection]
   [margin=2.75em,% chapter width + section width
    width=2em]

Wolfgang